What influences the intestinal flora from children?Updated 8 months ago

Birth: During a natural birth, microbial transmission takes place in the newborn through the vaginal tract, with bacteria (e.g. Escherichia coli, Staphylococcus and Streptococcus, as well as Bacteroides and Bifidobacterium) colonizing the newborn's intestines. 

Breastfeeding: The development process of the infant's microbiome and immune system is significantly influenced by breastfeeding. Breast milk contains oligosaccharides that stimulate the growth of Bifidobacterium bifidum and Lactobacillus, both essential probiotic organisms.

Taking medication: Prenatal or early childhood use of antibiotics, gastric acid inhibitors or antiseptic agents has a strong effect on the gut flora, as they not only destroy harmful bacteria but also the beneficial bacteria in the gut.

Diet: A balanced diet includes a variety of fiber, fermented foods, antioxidants, omega-3 fatty acids and adequate fluid intake.

Environmental factors: The hygiene theory states that a certain level of exposure to germs and bacteria during childhood is crucial for the development of a healthy microbiome and a robust immune system. Factors such as a larger family, contact with pets and/or a rural environment are considered beneficial, while a sterile urban environment generally leads to less exposure to bacteria.